@type t() :: %ExBifrost.Model.CohereChatV2200ResponseDeltaMessageCitationsOneOf{
  content_index: integer() | nil,
  end: integer() | nil,
  sources:
    [
      ExBifrost.Model.CohereChatV2200ResponseDeltaMessageCitationsOneOfSourcesInner.t()
    ]
    | nil,
  start: integer() | nil,
  text: String.t() | nil,
  type: String.t() | nil
}